<!DOCTYPE html>
<html lang="zh-Hans-CN">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1.0" />
    <title>Tongji Dragon&Lion Sport</title>
  </head>
  <style id="curtain">
    :root {
      background-color: black;
      color: black;
    }
  </style>

  <body id="app"></body>
</html>
